US4458887A - Gas spring locking mechanism - Google Patents

Gas spring locking mechanism Download PDF

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Publication number
US4458887A
US4458887A US06/400,054 US40005482A US4458887A US 4458887 A US4458887 A US 4458887A US 40005482 A US40005482 A US 40005482A US 4458887 A US4458887 A US 4458887A
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US
United States
Prior art keywords
locking member
engaging
circumferentially
actuating
axially
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/400,054
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English (en)
Inventor
Akihiro Shimokura
Tomio Imaizumi
Hiroshi Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokico Ltd
Original Assignee
Tokico Ltd
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Filing date
Publication date
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Assigned to TOKICO LTD. reassignment TOKICO LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: IMAIZUMI, TOMIO, MURATA, HIROSHI, SHIMOKURA, AKIHIRO
Application granted granted Critical
Publication of US4458887A publication Critical patent/US4458887A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0245—Means for adjusting the length of, or for locking, the spring or dampers
    • F16F9/0254—Means for adjusting the length of, or for locking, the spring or dampers mechanically lockable, e.g. by use of friction collar
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/30—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing of extensible, e.g. telescopic, construction
    • E05C17/305—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing of extensible, e.g. telescopic, construction with hydraulic locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/08—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing with special means for release, e.g. automatic release by further opening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • This invention relates to a gas spring and, particularly to a gas spring being adapted for use with such as a hatch back door of an automobile to open/close the door.
  • the gas spring connected to the hatch back door of the automobile enables automatically fully opening the door by simply applying a light force in opening the door.
  • the gas spring usually comprises a cylinder containing therein pressurized gas, a piston slidably disposed in the cylinder, and a piston rod connected to the piston and extending to the outside through one end of the cylinder.
  • the pressurized gas contained in the cylinder acts to bias the gas spring to the most extended condition.
  • the pressure of the gas in the gas spring determines the opening speed of the door and the force required for closing the door. When the pressure of the gas decreases excessively due to such as the ambient temperature being excessively decreased, the pressurized gas enclosed in the gas spring cannot maintain the door in the fully opened condition.
  • the locking mechanism in the gas spring which can releasably lock the piston or the piston rod at a desired length condition.
  • the locking mechanism is required to have a simple construction and to easily and reliably lock or release the piston or the piston rod.
  • An object of the invention is to provide a gas spring having a novel locking mechanism satisfying the requirements aforementioned.
  • the gas spring according to the invention comprises a cylinder, a piston slidably disposed in the cylinder, a piston rod connected to the piston and extending to the outside through one end of the cylinder, first and second axially contiguous recesses formed in the outer circumference of the piston rod, which recesses having oppositely inclined surfaces defining therebetween a ridge, a locking member mounted on the outer circumference of the piston rod and being snappingly and rockingly movable between the first and second recesses, resilient means for biasing the locking member against either of the recesses, and first and second axially spaced actuating members provided on the inner circumferential wall of the cylinder for cooperating with the locking members.
  • the first actuating member has a first engaging portion for engaging with the locking member being located in the first recess thereby restricting the movement of the piston rod in one direction, and a releasing portion for engaging with the locking member being located in the first recess thereby rockingly moving the locking member from the first recess to the second recess in response to the movement of the piston rod in the one direction, and the second actuating member has a second engaging portion for engaging with the locking member being located in the first recess thereby restricting the movement of the piston rod in the other direction.
  • the releasing portion and the second engaging portion are axially aligned, and the first engaging portion is circumferentially displaced therefrom, and the second actuating member further has an axially and circumferentially inclined guide walls for engaging with the locking member thereby circumferentially displacing the same relative to the actuating members and guiding between the first and second engaging portions.
  • first and second recesses are annular, and a plurality of circumferentially equally spaced locking members cooperate with annular first and second actuating members, which also have respectively a plurality of circumferentially equally spaced first engaging portions and first releasing portions and second engaging portions and axially and circumferentially equally spaced inclined walls.
  • FIG. 1 is a longitudinal sectional view of a gas spring according to the invention
  • FIG. 2 is a partial developed view of an actuating member incorporated in the gas spring of FIG. 1 and as viewed in the radially outward direction;
  • FIG. 3 is a sectional view taken along line III--III in FIG. 1;
  • FIG. 4 is a sectional view taken along line IV--IV in FIG. 1;
  • FIG. 5 is a sectional view taken along line V--V in FIG. 1;
  • FIGS. 6A is a partial developed view of the actuating member and showing the relative position of one of locking members at one operational condition of the gas spring;
  • FIG. 6B is a partial, enlarged half view in cross-section taken along line VI--VI in FIG. 6A;
  • FIGS. 7A, 8A, 9A, 10A, 11A and 12A are views similar to FIG. 6A but showing respective operational conditions;
  • FIGS. 7B, 8B, 9B, 10B, 11B and 12B are views similar to FIG. 6B and corresponding respectively to FIGS. 7A, 8A, 9A, 10A, 11A and 12A.
  • FIG. 13 is a longitudinal sectional view of a gas spring according to a second embodiment of the invention.
  • FIG. 14 is a partial developed view of the actuating member of the gas spring of FIG. 13;
  • FIGS. 15 and 16 are sectional views taken along lines XV--XV and XVI--XVI respectively;
  • FIG. 17 is a longitudinal sectional view of a gas spring according to a third embodiment of the invention.
  • FIG. 18 is a sectional view according to a fourth embodiment of the invention.
  • the gas spring shown in FIG. 1 comprises a cylinder 1, a piston 2 slidably disposed in the cylinder 1, and a piston rod 3 with one end thereof being connected to the piston and the other end extending to the outside of the cylinder 1.
  • One end of the cylinder 1 is closed by a cap 4, and the other end thereof is closed by a rod guide 5 having an opening for passing therethrough the piston rod 3 and by an seal member 6 being provided on the inner side of the rod guide 5.
  • the interior of the cylinder 1 is closed from the outside and is partitioned into two chambers A and B by the piston 2.
  • the chambers A and B receive therein pressurized gas and are permanently connected with each other through an opening 7 formed in the piston.
  • the piston 2 receives in the rightward direction in FIG. 1 a force corresponding to the pressure of the gas enclosed multiplied by the cross-sectional area of the piston rod 3.
  • first and second recesses define oppositely axially inclined contiguous walls 8b and 8a defining therebetween an annular ridge.
  • the first and second recesses shown in the drawing are generally V-shaped configurations defined respectively by oppositely inclined walls 8b and 8d and by oppositely inclined walls 8a and 8c, however, the configuration thereof may be modified as desired.
  • the recesses 8b and 8a snappingly and selectively receive therein a plurality of (four in the embodiment) circumferentially equally spaced locking members 9 which are resiliently urged against the outer circumference of the piston rod 3 by a resilient ring 10 such as a rubber ring or an annular coil spring.
  • Each locking member 9 has a bottom surface 9a and radially outwardly projecting two legs 9b and 9c.
  • the leg 9b When the locking member 9 is received in the second recess 8a with the bottom surface 9a generally engaging with the inclined wall 8a, the leg 9b inclines radially inward direction as shown in FIG. 10 B, and such condition is defined as a release position of the locking member 9.
  • the locking member 9 snappingly and rockingly moves between the lock position and the release position and, in the rocking movement, the bottom surface 9a rides over the ridge defined between the recesses 8a and 8b.
  • FIGS. 7B and 10B when the locking member 9 is received in either of the first and second recesses, a portion of the bottom surface 9a of the locking member 9 extends to the other of the recesses 8a and 8b so that the rocking movement of the locking member can be performed easily and smoothly.
  • a cylindrical member 11 having a specified configuration on the inner circumference thereof is fitted on the inner circumference of the cylinder 1 and is secured thereto by such as a caulking process.
  • the cylindrical member 11 is a unitary member consisting of axially spaced first and second actuating members 13 and 12.
  • the first actuating member 13 is located near to the rod guide 5 and has a plurality of circumferentially equally spaced first engaging portions 13b defining radially inwardly and axially outwardly (rightward in FIG.
  • each guide wall 13a, the first engaging portion 13b, the guide wall 13c and releasing portion 13d are circumferentially and sequentially arranged along the circumference of the cylindrical member 11, and cooperate with each of the locking members 9.
  • the second actuating member 12 is spaced axially from the first actuating member 13 and comprises a plurality of inclined portions 12a defining a radially inwardly and axially outwardly inclined straight line in the longitudinal section as shown in FIG. 6B, a plurality of second engaging portions 12b defining a radially extending straight line in the cross-section, a plurality of circumferentially spaced projecting portions 12c defined by a straight line parallel to the axis of the rod in the longitudinal section, a plurality of axially and circumferentially inclined radial guide walls 12d, and a plurality of axially and circumferentially inclined radial guide walls 12d.
  • each radial guide wall 12d consists of two axially outwardly and circumferentially diverging walls 12d and 12d as shown in FIG. 2, and which is advantageous in decreasing the axial length of the actuating member 12.
  • the first actuating member 13 projects radially inwardly as compared with the second actuating member 12 as shown in the drawings.
  • the releasing portion 13d aligns in the axial direction with the second engaging portion 12b, and the first engaging portion 13b is displaced circumferentially therefrom.
  • each locking member 9 freely passes through the second actuating member 12, but the leg 9b of each locking member 9 usually engages with the guide wall 12d, whereby each locking member 9 is circumferentially displaced relative to the actuating member 12, and is guided by the inclined portion 12a.
  • each locking member 9 engages with each of the guide walls 13 a of the first actuating member 13 and is displaced circumferentially along the guide wall 13a as shown in FIG. 7A and finally engages with the first engaging portion 13b.
  • the rightward movement of the piston rod 3 is locked by the locking members 9, as shown in FIG. 7B.
  • the gas spring takes the most extended condition.
  • the piston rod 3 In releasing the lock condition of the gas spring, the piston rod 3 is firstly displaced rightward from the condition of FIGS. 8A and 8B, then, the leg 9c of each locking member 9 engages with the release portion 13d of the first actuating member 13 as shown in FIG. 9B.
  • the release portions 13d act to snappingly and rockingly displace the locking members 9 to the second recess 8b or from the lock position to the release position as shown in FIG. 10B.
  • the locking members 9 do not displace in the circumferential direction since the second engaging portions 12b of the second actuating member 12 align respectively with release portions 13d of the first actuating member 13.
  • FIG. 13 through FIG. 16 show a second embodiment of the invention, wherein parts corresponding to the first embodiment are depicted by the same reference numerals.
  • the cylindrical member 11 in the first embodiment is substituted by a cylindrical member 21 having first actuating member 23 and a second actuating member 22.
  • the actuating member 22 has axially and circumferentially inclined radial guide walls 22d and 22e corresponding respectively with guide walls 12d and 12e in the first embodiment, and the axially and circumferentially inclined radial guide surfaces 13a and 13c in the first actuating member in the first embodiment are omitted.
  • the first actuating member 23 has first engaging portions 23b and releasing portions 23d corresponding respectively to the first engaging portions 13b and releasing portions 13d in the first embodiment
  • the second actuating member 22 has second engaging portions 22b similarly to the second engaging portions 12b of the first embodiment.
  • the cylindrical member 21 in the second embodiment is simple in the construction as compared with the first embodiment, but the function thereof is generally similar to the first embodiment.
  • FIG. 17 shows a third embodiment of the invention wherein the piston rod can be locked at a contracted condition.
  • the first and second actuating members 13' and 12' are formed integrally with a cap 13' closing the cylinder 1, and first and second axially contiguous annular recesses 8 are formed in the outer circumference of an extending portion 3' of the piston rod 3.
  • the detailed constitution and the operation are similar to the first embodiment and, therefore, detailed description therefor is omitted.
  • FIG. 18 shows a still further embodiment wherein locking mechanisms are provided on the opposite ends of the cylinder 1 for locking the piston rod both at the most extended and contracted conditions.
  • the first and second actuating members 13 and 12 are integrally formed in a cylindrical member 11, and the two actuating members may be formed separately, but, it is required to axially align the second engaging portion 12b with the releasing portion 13d, and it is advantageous to form integrally the actuating members.
  • the locking members 9 in the embodiment displace in the circumferential direction in engaging with axially and circumferentially inclined guide walls in the embodiments, however, the clindrical member 11 in the embodiment may rotatably mounted in the cylinder. Further, the axially and radially inclined surfaces 12a in the second actuating member 12 may be omitted.
  • a locking member is mounted on the piston rod of a gas spring and is rockingly and snappingly movable between a normal lock position and a release position, and first and second axially spaced actuating members are mounted in the cylinder to cooperate with the locking member, further, the first actuating member has circumferentially spaced a first engaging portion and a releasing portion, and the second actuating member has a second engaging portion and axially and circumferentially inclined guide walls.
  • the first engaging portion retaines the movement of the piston rod in one direction and the releasing portion displaces the locking member from the normal position to the release position in response to the piston rod in the one direction
  • the second engaging portion retaines the movement of the piston rod in the other direction and also displaces the locking member from the release position to the lock position
  • the guide walls displaces circumferentially the locking member between positions corresponding the first engaging portion and releasing portion.
  • the locking member when the piston rod moves in one direction, the locking member is guided to the first engaging portion thereby preventing reliably the movement in the one direction. And when the piston rod is moved from that condition in the other direction, the locking member is guided to the second engaging portion and the movement thereof is stopped. In releasing the locking mechanism the piston rod is moved by a small amount in the aforesaid one direction and thereafter in the other direction. The locking member firstly displaces from the lock position to the release position and, in passing through the second actuating member, returns to the lock position.
  • the construction of the locking mechanism is simple, and the operation is reliable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
US06/400,054 1981-07-20 1982-07-20 Gas spring locking mechanism Expired - Lifetime US4458887A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1981107476U JPS5812739U (ja) 1981-07-20 1981-07-20 ガススプリング
JP56-107476[U] 1981-07-20

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US4458887A true US4458887A (en) 1984-07-10

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ID=14460169

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/400,054 Expired - Lifetime US4458887A (en) 1981-07-20 1982-07-20 Gas spring locking mechanism

Country Status (3)

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US (1) US4458887A (enrdf_load_stackoverflow)
JP (1) JPS5812739U (enrdf_load_stackoverflow)
GB (1) GB2106216B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763498A (en) * 1984-12-14 1988-08-16 Fichtel & Sachs Ag Operating device for a central locking installation
US5120030A (en) * 1991-05-28 1992-06-09 General Motors Corporation Magnet assisted liftgate strut
US5273240A (en) * 1991-05-02 1993-12-28 Baruch Sharon Impact absorption system, particularly for aircraft seats
US5957031A (en) * 1995-01-18 1999-09-28 Hoerbiger Ventilwerke Akt. Hydraulic cylinder
DE19944758C1 (de) * 1999-09-17 2001-04-19 Gosow Fahrzeugtechnik Gmbh Aushubbegrenzung für Stoßdämpfer
DE3826862C2 (de) * 1988-08-08 2002-09-05 Stabilus Gmbh Gasfeder mit Zwischenarretierung
US20050103586A1 (en) * 2003-11-18 2005-05-19 Suspa Holding Gmbh Adjustable-length compression spring
DE102009036994A1 (de) * 2009-08-12 2011-02-24 Ulrich Hahn E.K. Gasfedern mit Rastung
US8146720B2 (en) * 2010-08-17 2012-04-03 Troy Capital Group Corp Shock absorber for a transportation means
US11131327B2 (en) * 2018-12-18 2021-09-28 Hyundai Motor Company Gas lift for preventing sagging
US11142034B2 (en) * 2018-05-21 2021-10-12 Beijingwest Industries Co., Ltd. Rotating latch assembly for raising and lowering the height of a vehicle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812739U (ja) * 1981-07-20 1983-01-26 トキコ株式会社 ガススプリング
IE862685L (en) * 1986-10-13 1988-04-13 Hoffmann La Roche An actuator
JPH0417876Y2 (enrdf_load_stackoverflow) * 1987-11-19 1992-04-21
DE102006014217B3 (de) * 2006-03-28 2007-05-16 Draeger Medical Ag Tragevorrichtung
WO2019025568A1 (de) * 2017-08-02 2019-02-07 Wolfgang Held Fluiddämpfer für gegeneinander verstellbare körper mit einem in einem zylinder verstellbar geführten kolben
GB2579078A (en) * 2018-11-19 2020-06-10 Titus D O O Dekani Improvements in dampers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2797937A (en) * 1955-11-28 1957-07-02 Mcdowell Mfg Co Pressure responsive grip coupling
US2811136A (en) * 1955-10-27 1957-10-29 Cleveland Pneumatic Tool Co Lock mechanism for fluid motors
US3799036A (en) * 1972-07-17 1974-03-26 R Slaughter Self-locking fluid operated cylinder
US3910566A (en) * 1974-05-15 1975-10-07 Case Co J I Coil spring detent assembly
US3938793A (en) * 1973-09-08 1976-02-17 Stabilus Gmbh Pneumatic spring with stop mechanism
JPS56167941A (en) * 1980-05-28 1981-12-23 Kayaba Ind Co Ltd Lockup device for gas spring
GB2106216A (en) * 1981-07-20 1983-04-07 Tokico Ltd Gas spring with automatic mechanical lock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811136A (en) * 1955-10-27 1957-10-29 Cleveland Pneumatic Tool Co Lock mechanism for fluid motors
US2797937A (en) * 1955-11-28 1957-07-02 Mcdowell Mfg Co Pressure responsive grip coupling
US3799036A (en) * 1972-07-17 1974-03-26 R Slaughter Self-locking fluid operated cylinder
US3938793A (en) * 1973-09-08 1976-02-17 Stabilus Gmbh Pneumatic spring with stop mechanism
GB1476496A (en) * 1973-09-08 1977-06-16 Stabilus Gmbh Pneumatic springs
US3910566A (en) * 1974-05-15 1975-10-07 Case Co J I Coil spring detent assembly
JPS56167941A (en) * 1980-05-28 1981-12-23 Kayaba Ind Co Ltd Lockup device for gas spring
GB2106216A (en) * 1981-07-20 1983-04-07 Tokico Ltd Gas spring with automatic mechanical lock

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763498A (en) * 1984-12-14 1988-08-16 Fichtel & Sachs Ag Operating device for a central locking installation
DE3826862C2 (de) * 1988-08-08 2002-09-05 Stabilus Gmbh Gasfeder mit Zwischenarretierung
US5273240A (en) * 1991-05-02 1993-12-28 Baruch Sharon Impact absorption system, particularly for aircraft seats
US5120030A (en) * 1991-05-28 1992-06-09 General Motors Corporation Magnet assisted liftgate strut
US5957031A (en) * 1995-01-18 1999-09-28 Hoerbiger Ventilwerke Akt. Hydraulic cylinder
DE19944758C1 (de) * 1999-09-17 2001-04-19 Gosow Fahrzeugtechnik Gmbh Aushubbegrenzung für Stoßdämpfer
US20050103586A1 (en) * 2003-11-18 2005-05-19 Suspa Holding Gmbh Adjustable-length compression spring
DE10353903A1 (de) * 2003-11-18 2005-06-16 Suspa Holding Gmbh Längenverstellbare Druckfeder
US7201259B2 (en) 2003-11-18 2007-04-10 Suspa Holding Gmbh Adjustable-length compression spring
DE102009036994A1 (de) * 2009-08-12 2011-02-24 Ulrich Hahn E.K. Gasfedern mit Rastung
US8146720B2 (en) * 2010-08-17 2012-04-03 Troy Capital Group Corp Shock absorber for a transportation means
US11142034B2 (en) * 2018-05-21 2021-10-12 Beijingwest Industries Co., Ltd. Rotating latch assembly for raising and lowering the height of a vehicle
US11131327B2 (en) * 2018-12-18 2021-09-28 Hyundai Motor Company Gas lift for preventing sagging

Also Published As

Publication number Publication date
GB2106216A (en) 1983-04-07
JPS6126650Y2 (enrdf_load_stackoverflow) 1986-08-09
GB2106216B (en) 1985-06-19
JPS5812739U (ja) 1983-01-26

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